Work-holding appliance for use in connection with the boring of bearings and the like.



I. H. RICHARDS L BJ BELLINGHAIVI. WORK HOLDING APPLIANCE FOR USE IN OONNICIION WITH THE BORING OF BEARINGS ANO IHE LIKE.

- APPLICATION FILED OCTI Il. I9|I 4,456., IzltIIIIIII NOV. IL), IHM,

3 SHEEISASHEET I.

I. H. RICHARDS N B. BELIINGHAIVI. WORK HOLDING APPIIANOI: FOR OSE IN OONNEOIION WITH IIIE BONI AND THE LIKE.

APPLICATION FILED OCT. II. I9I7. LZSQA@ NG 0F BEARINGS 3 SHEETS-SHEET 2.

WITNESSES INVENTORSQEZ I) m f. Jm. 3Q

J. H. RICHARDS & B. BELLINGHAM. WORK HOLDTNG APPLTANCE FOR USE TN CONNECTION wTTH THE BORING 0F BEARINGS AND THE LTKE.

APPLICATION FILED OCT. Il, |911. 1,284,456.

945Mo f'iz e JOI-IN HARTLANI) RICHARDSAND BENJAMIN BELLINGHAM, OF SALTLEY, BIRMING- HAM, ENGLAND.

WORK-HOLDING APPLIANCE FOR USE IN CONNECTION WITH THE BORING OF BEARINGS .AND THE LIKE.

To all whom it may concern Be it known that we, Jol-IN HARTLAND RICHARDS and BENJAMIN BELLiNGi-IAM, subjects of the King of Great Britain, residing at Saltley, Birmingham, England, have invented certain new and useful Improvements in York-Holding Appliances for Use in Connection with the Boring of Bearings and the like, of which the following is a specification.

This invention relates to the boiing of bearings and the like2 but particularly bearings or brasses made in two halves. The object of the present invention is to provide means for holding the bearings or the like in position while being operated upon, which Aadmits of the work being quickly removed and replaced, insures every bearing beinof bored true in relation to the longitudinzil faces, minimizes the liability of errors occurring due to swarf and the like getting upon the faces of the work or upon the parts of the holder, and which comprises self-contained means for quickly and accurately setting the boring tools.

According to the present invention the work-holder consists of a detachable carrier open at the top or side for removal of the work and having self-contained means for fixing the work in position upon suitable faces or supports at opposite sides. said carrier being adapted to be removably supported within a jig or frame also open at the top or side to allow of the removal of the work from the holder.

Figure l of the accompanying drawings represents a longitudinal section through a work-holding appliance in accordance with this invention.

Fig. 2 represents an end View.

Fig. 3 is a vertical section on line zr, Fig. l, showing the work-clamping device.

Fig. 4 is a detail view showing one of the fastening devices for securing the workholder in place within the jig.

Fig. 5 is a vertical view i the half-bearings can be bored in pairs.

Fig. 6 is a transverse section, and

Fig. 7 is an elevation illustrating a modification in which provision is made for adjusting the position of the bearing so that it can be bored either concentric or eccentric with respect to the outside diameter.

Specification of Letters Patent.

Application filed October 11, 1917.

llustrating how' Patented Nov. 12, 1918.

Serial No. 195,975.

As shown in Figs. l to l, the work-holding appliance consists of a main frame or jig l bolted to a suitable part of the lathe or boring machine and provided at one end with a boss or extension 2 carrying a central bearing bush 3 to receive and support the boring bar l, which latter passes axially through the ji(Y or frame. The said l is bored out cylindrically from the end opposite to that which supports the boring bar, and the upper part, for a length rather greater than the length of the bearing to be bored. is cut away at 5 to the horizontal center line. but leaving the end portions intact. This jie' or frame 1 is arranged to receive within its interior a detachable work-holder consisting of a substantially cylindrical body whose external diameter is equal to the internal diameter of the said jig or frame. into which it is adapted to be introduced through the open end. It is adapted to be secured therein by any suitable means, such as lever cams T turning about hinged or swinging pins so that they can be turned clear of the workholder. as shown by dotted lines in Fig. 2. The work-holder 6 is bored out axially `to a somewhat larger diameter than the boring bar 4, and the upper part is recessed or cut away between its ends to the horizontal center line of the jig, the cylindrical end parts S. 9, engaging within the ends of the said The half-bearing l0 is placed in the work-holder so that its liat longitudinal fat-es rest upon the fiat longitudinal faces ll. l2, of the work-holder formed by cutting away the upper portion, these faces lying in a horizontal plane passing through the axes of the boring bar. To hold the bearing in position a radially adjustable stop-bar 13 is secured to one longitudinal face 1l of the work-holder. said stop-bar extending the full length of the bearing and serving as an abutment for the latter. while the opposite longitudinal face l2 of the work-holder carries a pair of curved brackets l-l supporting between them a longitudinal spindle 15 upon which are mounted two or more eccentric clamps or cams 16 provided with short operating levers 1T. After the bearing 1() has been placed in position the eccentrics or cams 1G are operated so as to clamp the said bearing securely against the stop-bar 12% and force its fiat longitudinal faces against the coned at 18 to engage within an internally tapered recess in the corresponding-end of the jig. By means of the eccentric clamps 16 the bearings can be quickly removed and replaced by others through the open top of the jig, and thus the true boring of all bearings relatively to the longitudinal faces is insured.

lVhen a bearing of a different size is to be bored the work-holder is removed endwise from the jig and replaced by another which is suitable for the said bearing.

The boring bar 4 preferably carries ,two radially arranged tools 19 disposed diametrically opposite to one another, butl longitudinally separated,l so that the tools are brought into action successively, the one tool commencing a cut as the other moves out of the half bearing. The tools are adjustable by means of screw plugs 20 engaging with their inner ends, and they may be fixed by set-screws. To facilitate the setting and ad,- justment of the tools, the jig or main frame 1 carries a micrometer gage 21 which projects radially into the recessed interior 22, so that by bringing the tools opposite to the gage the correct setting can be readily deter-mined.

W hen the half-bearings are to be bored in pairs the lower portion of the workholder 6, as shown in Fig. 5, may be recessed to receive the bottom half 23 of the bearing which` mav be held in place againstl the upper half 10 by one or more wedges 24, or by other suitable means, the said upper half 10 being provided with lugs 25 flush with the flat longitudinal faces and which engage with thefiat faces 11, 12, ofthe workholder.

The jig or main frame may either be fed longitudinally of the boring bar held stationary, or the boring bar may be fed forward and the jig secured to a fixed part of the lathe or boring machine.

To admit of the position of the bearing being adjusted relatively to the boring bar, so that the inner surface may be bored either concentric or eccentric with respect to the outside diameter, as desired, the arrangementrepresented in Figs 6 and 7 may be adopted. Thus, applied to the flat faces 11, 12, of the work-holder 6 is a bracket or carrier 26 having interior ledges 27 against which the bearing 10 is clamped by a screw 28, and provided with external flanges 29 laterally adjustable within guide channels 30 and engaged by set-screws 31 extending intov said channels. The apparatus illustrated in Figs. 6 and 7 is shown as being arranged vertically for a vertical boringbar. Likewise the apparatus shown in Figs. 1 to 3 may be arranged vertically instead of horizontally. i

Having fully described our invention, what we desire to claim and secure ters Patent is 1. In a work-holding appliance for use in connection with the boring of bearings and lthe like, the combination with a fixed open Vthe removable work-holder for fixing the work to the latter, said work-fixing means being included within the contour of the opening in the one end of the fixed frame so as to be removable therethrough with the work-holder, and means independent of the work-fixing means for the purpose of securing the work-holder within the fixed frame.

2. In a work-holding appliance for use in connection witlrthe boring of bearings and the like, the combination with a fixed frame with an opening and also having a recess in one end and an opening in the other end, of a detachable one-piece work-holder of inclosing cylindrical form adapted to be inserted endwise through the opening in one end of the fixed frame so that its one extremity engages within the recess in the other end of the said frame and abuts against an interior part of the frame, said Work-holder having an opening corresponding in location to the position ofthe opening in the fiXed frame to admit of the removal of the Work in a radial direction, means Wholly carried by and selfcontained with the removable workholder for fixing the work to the latter, said work-fixing means being included within the contour of the opening in the one end of the fixed frame, and means independent of the work-fixing means for the purpose of securing the work-holder Within the fixed frame.

An appliance for boring bearings and the like comprising a boring bar, a fixed frame having at one end an axial bearing for said boring bar and an internal socket concentric with said bearing and atthe other end an opening, a detachable one-piece workholder endwise insertible in and removable from the fixed frame through the opening in the end thereof, means Wholly carried by and self-contained with the removable work-holder for fixing the work tothe latter, said work-fixing means being included within the contour of the opening in the end of the frame, and means independent of the work-fixing means for the purpose of securingthe work-holder within the fixed frame.

4. In a Work-holding appliance for use in connection with the boring of bearings and the like, the combination with an open frame, a detachable one-piece Work-holder vby Letmamas of inclosing cylindrical form having worksupporting faces at opposite sides and insertible endwise within the frame, an adjustable stop-bar extending` longitudinally upon one of said work-supporting faces, means carried wholly upon the other worksupporting facefor fixing the work in position against said stop-bar, and means independent of the work-fixing means for securing the work-holder within the fixed frame.

A work-holding appliance ffor use in connection with the boring of bearings and the like comprising an open frame, a bor-v ing-bar supported by and movable through the frame, said frame being bored out cylindrically and being eut away to the axial plane between end portions, a work-holder of inelosing cylindrical fornidetachably supported within the interior of the frame and removable endwise, said work-holder being bored out t0 receive the boring-bar and being cut away, between its ends, to the axial plane, formingr two flat longitudinal faces upon which the work is adapted to be placed, a stop member upon one face, means carried wholly upon the other face for fixing the work in position against the stop device, and means independent of the work-tixing means for securing the work holder within'the fixed frame.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

JOHN HARTLAND RICHARDS. BENJAMIN BELLINGHAM. Witnesses:

HARRY OsMoND PRATT, HENRY NORTON SKERRETT. 

